/Engine/Source/Runtime/Engine/Classes/Engine/HLODProxy.h
Build a unique key for the LOD actor, used to determine if the actor needs rebuilding
static [FName](API\Runtime\Core\UObject\FName) GenerateKeyForActor ( const [ALODActor](API\Runtime\Engine\Engine\ALODActor) * LODActor, bool bMustUndoLevelTransform )